| | Winterport, ME | Brewer, ME | United States |
| Population | 3,845 | 9,606 | 329,725,481 |
| Female Population | 49.6% | 53.3% | 50.5% |
| Male Population | 50.4% | 46.7% | 49.5% |
| Median Age | 44.8 | 39 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,768 | 9,476 | 309,327,143 |
| Population - 2000 | 3,602 | 8,987 | 285,036,114 |
| Population - 1990 | 3,175 | 9,021 | 251,960,433 |
| Pop. 2000 to Now | 11.8% | -0.4% | 15.6% |
| Pop. 1990 to Now | 26.9% | -0.8% | 30.8% |
| space4 | | | |
| Population Density | 108.2 | 630.6 | 93.4 |
| Land Area | 35.5 | 15.2 | 3,531,905.4 |
| Water Area | 1.5 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Winterport, ME | Brewer, ME | United States |
| Age 0 to 4 | 8.4% | 5.6% | 5.9% |
| Age 5 to 9 | 3.6% | 6.3% | 6.1% |
| Age 10 to 14 | 4.4% | 5.2% | 6.6% |
| Age 15 to 17 | 3.7% | 4.5% | 3.9% |
| Age 18 to 20 | 3.2% | 1.9% | 4.0% |
| Age 21 to 24 | 2.6% | 4.4% | 5.2% |
| Age 25 to 34 | 14.2% | 16.2% | 13.8% |
| Age 35 to 44 | 10.4% | 12.6% | 12.9% |
| Age 45 to 54 | 15.7% | 13.6% | 12.6% |
| Age 55 to 59 | 6.6% | 7.4% | 6.7% |
| Age 60 to 64 | 10.6% | 5.5% | 6.3% |
| Age 65 to 74 | 12.6% | 9.2% | 9.6% |
| Age 75 to 84 | 3.8% | 5.0% | 4.5% |
| Age 85 and over | 0.2% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Winterport, ME | Brewer, ME | United States |
| White | 97.9% | 95.2% | 59.4% |
| Black | 0.2% | 0.5% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.0% | 0.4% |
| Two or More Races | 1.2% | 2.5% | 3.2% |
| Hispanic | 0.5% | 0.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Winterport, ME | Brewer, ME | United States |
| Married Population | 62.1% | 41.3% | 49.8% |
| Currently Married | 61.8% | 40.4% | 48.0% |
| Married but Separated | 0.3% | 0.9% | 1.8% |
| Single Population | 37.9% | 58.7% | 50.2% |
| Never Married | 19.8% | 32.2% | 33.8% |
| Divorced | 15.1% | 19.6% | 10.8% |
| Widowed | 3.0% | 7.0% | 5.6% |
| space5 | | | |
| Household Size | 2.41 | 2.32 | 2.60 |
| Households | 1,587 | 4,074 | 124,010,992 |
| Family Households | 1,212 | 2,110 | 80,755,759 |
| Married couple, w/children | 27.0% | 25.1% | 30.5% |
| Married couple, no children | 51.4% | 43.8% | 42.9% |
| Non Family Households | 375 | 1,964 | 43,255,233 |
| Single householder, w/children | 13.2% | 23.6% | 15.8% |
| Single householder, no children | 8.4% | 7.5% | 10.8% |